window.onload = function () {
    Particles.init({
      selector: ".background",
      color: ["#00CDA4", "#1B8998"],
      maxParticles: 90, //最大颗粒数
      connectParticles: true, //是否有连线
      minDistance: 120, //连接线之间的距离
      sizeVariations: 3, //连接点的大小
      speed: .5, //远动速度
    });
  };